Physicians and students of medicine receiving clinical instruction will find this book an invaluable aid in applying biochemistry to the practice of medicine. Approximately one fifth of the book is devoted to a summary of the present state of knowledge of the chemistry of carbohydrates, fats and proteins and of intermediary metabolism. The physician who has not kept up with the developments in biochemistry will find this book readable and worth reading. It has less value for the advanced student of medicine, since he has had a more comprehensive course. The remaining four fifths deals with the medical applications of biochemistry. The headings of some of the chapters are: "The Reduction Test for Urine and What It Connotes," "Non-Diabetic Glycosurias," "Diabetes Mellitus," "Abnormal Fat Metabolism," "The Albuminuria Test and What It Connotes," "Abnormal Metabolism of Proteins and Protein Derivatives," "Metabolism of Water" and "Liver Functions and Liver Functional Tests." The